804806999 has 4 divisors (see below), whose sum is σ = 824436480. Its totient is φ = 785177520.

The previous prime is 804806993. The next prime is 804807011. The reversal of 804806999 is 999608408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 804806999 - 2¹² = 804802903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 804806999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804806993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9814679 + ... + 9814760.

It is an arithmetic number, because the mean of its divisors is an integer number (206109120).

Almost surely, 2^804806999 is an apocalyptic number.

804806999 is a deficient number, since it is larger than the sum of its proper divisors (19629481).

804806999 is a wasteful number, since it uses less digits than its factorization.

804806999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19629480.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 804806999 is about 28369.1205186202. The cubic root of 804806999 is about 930.1733977371.

The spelling of 804806999 in words is "eight hundred four million, eight hundred six thousand, nine hundred ninety-nine".